/*
 * Copyright 2015-present Open Networking Foundation
 * Copyright © 2020 camunda services GmbH (info@camunda.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.atomix.utils.event;

/** Abstraction of a service capable of asynchronously notifying listeners. */
public interface ListenerService<E extends Event, L extends EventListener<E>> {

  /**
   * Adds the specified listener.
   *
   * @param listener listener to be added
   */
  void addListener(L listener);

  /**
   * Removes the specified listener.
   *
   * @param listener listener to be removed
   */
  void removeListener(L listener);
}
